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180600013 = 1116418183
BaseRepresentation
bin10101100001110…
…11110011001101
3110120211102122101
422300323303031
5332213200023
625530515101
74322034436
oct1260736315
9416742571
10180600013
1192a42510
1250595a91
132b554019
1419db248d
1510cc61ad
hexac3bccd

180600013 has 4 divisors (see below), whose sum is σ = 197018208. Its totient is φ = 164181820.

The previous prime is 180599999. The next prime is 180600047. The reversal of 180600013 is 310006081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 180600013 - 221 = 178502861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180600713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8209081 + ... + 8209102.

It is an arithmetic number, because the mean of its divisors is an integer number (49254552).

Almost surely, 2180600013 is an apocalyptic number.

It is an amenable number.

180600013 is a deficient number, since it is larger than the sum of its proper divisors (16418195).

180600013 is a wasteful number, since it uses less digits than its factorization.

180600013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16418194.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 180600013 is about 13438.7504255418. The cubic root of 180600013 is about 565.2482924681.

Adding to 180600013 its reverse (310006081), we get a palindrome (490606094).

The spelling of 180600013 in words is "one hundred eighty million, six hundred thousand, thirteen".

Divisors: 1 11 16418183 180600013